Device for extracting dust form carpets, furniture, &amp;c.



, PATENTED NOV. 6, 1906. H. SURBNSEN. A *nnvmn r011 EXTRA STING DUST FROM GKRPETS, FURNITURE, 8w. APPLICATION nun MAB. 16,1906.

Unriinn STAT-as rArnNr HENRY SillRENSEN, QQPBWHAGEN, DENMAREZ DEVICE, Foe ExTFiAc'rme To all whom it may concern;

Be it known that I, HENRY SonnNsnn', civil engineer, a citizen of Norway, residing at Copenhagen, in the Kingdom of Denmark, have invented certain new and useful linprrovernents in Devices for Extracting Dust 1 A om Carpets, Furniture, and the Like and I do hereby declare the following to'be a full, clear, and exact descriptionof the invention, such aswill enable others skilled in the art to which it ,appertains to make and use the 'samereference being had to the-accompany- 111g drawings, and to letters of reference I frnarked thereon, whichforma part of this- 15- specification. I v

Th s invention refers to certain improve merits devices for extracting dust from carpets, furniture, surfaces of walls, rugs, and other materials; and its principal obyect isto preventthe dust from: connng into direct con- "tact with the inner surfaces of the suctionpump, and thus diminish its capacity.

It has hitherto been customary to insert in the suction pipe or hose filters for separating the dust and impurities from the air, and

thus allow only comparatively pure air to pass through the suction-pump. A great inconvenience in connection with this ar rangem'entis, however, that the suction effect. gets greatly diminished through the presence of the-said filters, and,.furthermore,

1 that these filters get constantly'clogged and I necessitate frequent cleaning. In order obviate these drawbacks, the filters have entirely been doneawaywith, and the dust is collected by mere action ofthe air at the bot tom of 'a special receptacle,hereinafter called dust-separator, insertedin the conduit be tween the suction-pump and the nozzle, from which dust-separator the dust may be removed through a suitable outlet. The dust is sucked into the said dust-separator at the top and gets whirled round and deposited at the bottom of the dust-separator, like, for instance, a snowdrift formed by'a whirlwind or a deposit formed by the back-' flow of a river. Of course the distance be-.

' tween inlet and outlet and the interior relative p and sucke dimensions of thedust-separator must be selected, so as to allow the action'of the air to form whirls. As, however, some particles of.

dustor imcpum'ties may still be carried along in the direction of the ump, the upper space of the aforementione dust-separator may be connected with the upper space of a chamber containing water W "ch 7 I Specification of Letters Patent. 4 I Application filed March 15, 199E}; Serial No. 365321;

silt-int FRGM GI'hHPETL Patented Kiev. '5,

The invention is illustrated on the accent panymg drawings, in wh1ch- J i Figure 1 shows a section through the ustpump with water-piston, The pump is shown in section. Fig. 3 shows the dust-separator connected with a double-acting pump with water-piston.

a'isthe suction-pipe or suction-hose, which noz zle. (Not shown.) The hose a cbmmunicates, by means'oi a suitable connecting piece a, with the uppermost space of a rece tacle 11, forming the dust-separater which opposite to thehose a is provided u t an outlet 0, coniimunicating' either direo or by means of a connecting-piece c with the suction-pump, which is not shown in and which may be of any known cons.v

whirling of the air in the dust-separator slur-- ing the deposit cl of the dust. y

The fact of the air-currentbeing produce-1 by mere suction, so that the air has prac tically but a small density, almost the totality of the dust sucked in with the air will be able to sink down and form a deposit in the hottom of the tank I), as shown at d.

deposit can be easily removed and at suit able intervals.

Fig. 2 shows a form of construction in a special form or suction-pump. The recipro eating piston g in the cylinder it forms a wall against a water column i, which the travel of the piston will move up and down. in the suction-chamber j, which is provided with suction-valve la and a pressure-valve 3. cylinder-h has a water-feeding pipe m, leading direct into the cylinder at place mime separator While in .funci in. 2 repre-v sents the dust-separatoi connected with is provided with a suitable mouthpiece ortion. "Arrows 6 illustrate the actien or f is a trap or the like, through which the which the dusi, eparator communicates wi th' backs from clogging of filters and diminish.

mg of suction effect are completely obviated. 2

The i diately in front of the piston g when the latter is in. the position shown in Fig. 2-i. a, at the beginning of the return stroke. The Water-inlet Wlll consequently be covered by the piston almost during the Whole of its travel. When the piston from the position shown by dotted lines moves to the right, it will toward the end of its stroke uncover the mouth of the pipe 111. and draw in a certain small quantity of water. This uantity of fresh water thus admitted byeacstroke of the piston will partly contribute to keep the water columni cold, so that it does not be- I come heated by the increase of temperature caused in the chamber 3 through the compression and will partly contribute to keep the water column c clean. The small quantity of dust that may not have been deposited in the dust-separator and that is drawn into the chamber j through the valve 7c will,

if not passing away direct throirigh the valve Z, fall down andfloat on the su ace n of the water column d, and as for each stroke of the piston g as much surface-water will escape through the overflow or pressure valve I as is entering into the cylinder at each suctionstroke through the pipe m the dust will be constantly removed from the surface of the water, which will conse uently always present a clean surface to t e air coming from the dust-separator.

The pipe m may be provided with a cock 0 for re ulating the supply of feed-Water, and

the in et of the feed-pipe m being arranged sition to the left, as shown in full lines on 3, the quantity of fresh water drawn in W' l beled into the right water-column i and cause a corresponding quantity of surface .Water a, at the subsequent stroke of the piston to the right to pass away through the valve 1.

When the piston assumes the extreme position to the right, as shown in dotted lines on Fig. 3, the fresh water will be led into the Water column 4 and the surface water a will esca e through the valve Z at the return stro e of the piston.

Instead of water the columns i i may consist of some other suitable liquid.

1. In a device of the character described, the combination of ,a dust-receptaclecommunicating with a dust-intake and with a.

fluid-containing suction-chamber, a pumpcylinder communicating with the latter provided with a fluid-feed inlet, and a piston adapted to control said inlet.

2. In a device of the character described, the combination of a dust-receptacle having a dust-intake in the upper part thereof, an air-exhaust communicating with the opposite end of the receptacle, a fluid-containing suction-chamber communicating with the air-exhaust, a pum -cylinder communicating With the suctionc amber and provided wit a fiuid-feed inlet, and a piston in the pumpcylinder adapted to uncover the inlet at the extreme position thereof.

' 3. In a device of the character described, the combination of a dust-receptacle having a dust-intake at one end of the upper part thereof and an ail-exhaust port at the opposite end, a valve in said port, a fluid-containing suction-chamber comm ni eating with the receptacle through the exhaust-port, a pump-cylinder communicating with the suction-chamber and provided with a fluid-feed inlet, a piston in the pump-cylinder adapted to control the inlet, and a valved outlet-port in the suction-chamber.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

HENRY SORENSEN.

Witnesses:

ERNEST BOUTARD, J. P. PFNAUSTANZ. 

